Yes, this particular matrix adds huge load, but we are okay with it for the flexibility that provides. I am sure we could create a smaller matrix that would still exhibit the same bad formatting, but I wanted to make sure you would see what we see.
Yes, there is a Combination Filter field that can be used to "sparsify" the matrix and only run a subset of the combinations. Depending on how you set it up, the filter can react to inputs to the job so that you have a sort of dynamic filtering. It's a great way to only test subsets when the whole table is not needed. To keep things simple, you can set the combination filter to:
Axis6=="4p"
It will only run the odd rows of the matrix, and if you have run the full matrix before you will see that the even rows still looks like they ran but in reality they are all skipped combinations (you can see by hovering with the mouse). To see combinations marked as "not run" you must not have any record of that combination running, even from previous builds. Just delete all the builds other than the last one and you will see that the even rows are now shown as "not run".
I hope this helps, let me know if you need more guidance.
sorry , jenkins version is 2.452.1